Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/book/AmericanSD/cresc.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-6770-cresc.ps) >>/Users/jc/w/tmp/Tune-6770-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/AmericanSD/cresc.abc

Error exit status 256; here are some files to check:
[P=tuneget V=1/1 B=0 scale=0.70 512x512 PNG]
filesizedescription
Find_67709.log 1717 Log file, useful mostly for debugging
Tune-6770-cresc.abc 148 ABC music file with the extracted tune(s)
Tune-6770-cresc.ps 6 PostScript
Tune-6770-cresc.txt 148 Plain-text file with the extracted tune(s)
Tune-6770-get.log 3993 Log file, useful mostly for debugging
Tune-67704-get.log 4743 Log file, useful mostly for debugging
Tune-67707-024_March_of_the_17_Regt.abc 834 ABC music file with the extracted tune(s)
Tune-67707-024_March_of_the_17_Regt.txt 834 Plain-text file with the extracted tune(s)
Tune-67707-get.log 3505 Log file, useful mostly for debugging
These files should be available for 24 hours.